Table with truss support structure

ABSTRACT

A folding table may include a tabletop, a frame, a truss support structure, and support structures. The tabletop may include a first tabletop section and a second tabletop section that are generally aligned in the same plane in the unfolded position and are disposed generally adjacent and parallel in the folded position. The frame is connected to the tabletop and may include a side rail with a first rail section connected to the first tabletop section and a second rail section connected to the second tabletop section. The truss support structure may be connected to the first rail section and the second rail section of the side rail. The truss support structure extends across an interface between the first and second tabletop sections in the unfolded position. The support structures may support the tabletop above a surface.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to and the benefit of U.S. provisional patent application Ser. No. 62/133,825, filed on Mar. 16, 2015, which is incorporated by reference in its entirety.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention generally relates to tables and, in particular, to tables that are capable of being folded and unfolded.

2. Description of Related Art

Many different types of tables are well known and used for a variety of different purposes. For example, conventional tables may include legs that are pivotally attached to a tabletop and the legs may be movable between a use position in which the legs extend outwardly from the tabletop and a storage position in which the legs are folded against an underneath portion of the tabletop. Conventional tables with relatively large tabletops and folding legs are often referred to as “banquet tables” and these tables are frequently used in assembly halls, banquet halls, convention centers, hotels, schools, churches, and other locations where large groups of people meet. When the tables are no longer needed, the table legs can be moved into the storage position and the tables may be moved or stored.

Conventional banquet tables with movable legs may allow the table to be more conveniently stored. The tabletop for many conventional banquet tables with movable legs, however, retains its size and shape. For example, many known banquet tables have a length between six and ten feet and a width between three and four feet. As a result, many conventional banquet tables require a large storage area even when the legs are in the collapsed position. This large storage area may be especially problematic for larger facilities such as hotels, schools, and churches because a considerable number of tables may have to be stored. Thus, a significant amount of space may be required to store the tables. In addition, smaller facilities such as restaurants, offices, and homes may use one or more conventional banquet tables. These smaller facilities may use the tables less frequently, such as during special occasions. Conventional banquet tables, even when the legs are folded, are often too bulky and awkward to be conveniently used and stored at such smaller facilities. As a result, it is often necessary for both larger and smaller facilities to rent and/or borrow banquet tables when needed. Disadvantageously, this process of renting and/or borrowing banquet tables can be inconvenient, time consuming and costly.

Conventional banquet tables are also often difficult to move or transport from one location to another. For example, because of the length of many conventional banquet tables, it is often difficult for a single person to move the table. In addition, the extended length of conventional banquet tables may preclude the tables from being transported in the trunk or back seat of a typical passenger car. Accordingly, conventional banquet tables may have to be transported by truck, trailer, or an oversized vehicle such as a sports utility vehicle. These and other factors may make conventional banquet tables difficult, time consuming, and expensive to move.

It is also known to construct tables that are capable of being folded in half. Conventional fold-in-half tables may include a tabletop with two sections pivotally connected by hinges. The two sections usually have the same size and shape, and the hinges are typically located at the center or middle of the tabletop. The two sections of the tabletop may be moved between an unfolded position which the sections of the tabletop are generally aligned in the same plane and a folded or collapsed position in which the two sections are positioned generally adjacent to each other for storage.

Disadvantageously, many conventional fold-in-half tables with foldable tabletops are unable to support a significant amount of weight. For example, the connection between the two sections of the tabletop for many known fold-in-half tables is relatively weak, which may cause, for example, a portion of the tabletop to sag or slump. Additionally, the connection between the tabletop sections for many known fold-in-half tables may be relatively frail and may break if a significant load or force is applied to the tabletop. In order to construct a stronger table, it is known to increase the size and thickness of the frame, but this may undesirably increase the weight and cost of the table.

BRIEF SUMMARY OF EMBODIMENTS OF THE INVENTION

A need therefore exists for a table that eliminates or diminishes the disadvantages and problems described above.

One aspect is a folding table that may include a tabletop, a frame, a truss support structure, and one or more support structures. The tabletop may be a folding table top that is movable between a folded position and an unfolded position. The tabletop may include a first tabletop section and a second tabletop section. The first tabletop section and the second tabletop section may generally be aligned in the same plane when the tabletop is in the unfolded position. The first tabletop section and the second tabletop section may be disposed generally adjacent and parallel to each other when the tabletop is in the folded position. The frame may be connected to the tabletop. The frame may include a side rail with a first rail section connected to the first tabletop section and a second rail section connected to the second tabletop section. The first rail section may at least partially define a first opening. The second rail section may at least partially define a second opening substantially aligned with the first opening. The frame may include a center cross member that is may at least partially positioned in the first and second openings. The center cross member may be aligned with an axis of rotation about which the frame rotates between the folded and unfolded positions. The axis of rotation may be located between an outer surface of the first side rail and an inner surface of the first side rail. The first rail section and the second rail section may be disposed in an offset configuration such that the truss support structure is disposed between the first rail section and the second rail section. The offset configuration may enable an outer surface of the first rail section and an outer surface of the second rail section to both contact a lower surface of the tabletop when the tabletop is in the folded position. The truss support structure may be connected to the first rail section and the second rail section of the side rail. The truss support structure may extend across an interface between the first tabletop section and the second tabletop section when the tabletop is in the unfolded position. The truss support structure may include a center support member that is coupled to the center cross member, a first support member that includes an end connected to the center support member and another end connected to the first rail section, and a second support member that includes an end connected to the center support member and another end connected to the second rail section. The center support member may include a first end at which the center support member is coupled to the center cross member and a second end opposite the first end. The first support member and the second support member may be connected at the second end of the center support member. When the tabletop is in the unfolded position, the center support member may extend substantially normal to a lower surface of the tabletop such that the second end of the center support member is displaced from the lower surface of the tabletop by a distance, gap, or space. The one or more support structures are configured to support the tabletop above a surface.

Advantageously, the folding table may be configured in the folded position and in the unfolded position. In the folded position, the offset configuration may enable the truss support structure to be stored within the folding table. The folded position may also enable a volume occupied by the folding table to be reduced, which may further enable the folding table to be stored and transported conveniently. In the unfolded position, the truss support structure may provide support to the tabletop. The truss support structure may allow the table to support a larger load relative to tables without the truss support structure.

Another aspect is a folding table that may include a tabletop, a frame, a truss support structure, a connecting member, and one or more support structures. The tabletop may be movable between a folded position and an unfolded position. The tabletop may include a first tabletop section and a second tabletop section. The first tabletop section and the second tabletop section may generally be aligned in the same plane when the tabletop is in the unfolded position. The first tabletop section and the second tabletop section may be disposed generally adjacent and parallel to each other when the tabletop is in the folded position. The frame may be connected to the tabletop. The frame may include a side rail with a first rail section connected to the first tabletop section and a second rail section connected to the second tabletop section. The connecting member may be attached to the first rail section. The truss support structure may be connected to the first rail section and the second rail section of the side rail. The truss support structure may extend across an interface between the first tabletop section and the second tabletop section when the tabletop is in the unfolded position. The truss support structure may include a center support member that is coupled to the center cross member, a first support member that includes an end connected to the center support member and another end connected to the first rail section, and a second support member that includes an end connected to the center support member and another end connected to the second rail section. The first support member may include a rod and a first end of the first support member may be pivotally connected to the center support member. A second end of the first support member may include an adjusting mechanism. The first support member may be slidably disposed within the connecting member. In detail, when the tabletop is in the folded position the center support member may be disposed between the first rail section and the second rail section, and the second end of the first support member may be separated or spaced apart from the connecting member such that a portion of the first support member between the first end and the second end is positioned in the connecting member. When the tabletop is in the unfolded position the center support member may extend substantially normal to a lower surface of the tabletop and the adjusting mechanism may contact the connecting member.

Yet another aspect is a folding table that may include a tabletop, a frame, a truss support structure, a connecting member, and one or more support structures. The tabletop may be movable between a folded position and an unfolded position. The tabletop may include a first tabletop section and a second tabletop section. The first tabletop section and the second tabletop section may generally be aligned in the same plane when the tabletop is in the unfolded position. The first tabletop section and the second tabletop section may be disposed generally adjacent and parallel to each other when the tabletop is in the folded position. The frame may be connected to the tabletop. The frame may include a side rail with a first rail section connected to the first tabletop section and a second rail section connected to the second tabletop section. The connecting member may be attached to the first rail section. The truss support structure may be connected to the first rail section and the second rail section of the side rail. The truss support structure may extend across an interface between the first tabletop section and the second tabletop section when the tabletop is in the unfolded position. The truss support structure may include a center support member that is coupled to the center cross member, a first support member that includes a first end connected to the center support member and a second end connected to the first rail section, and a second support member that includes a first end connected to the center support member and a second end connected to the second rail section. For example, the first support member may include a first link and a second link. The first link may include a pin or another engaging portion. The second link may define a slot or another a receiving portion in which the pin is positioned. The first end of the first support member may be pivotally connected to the center support member. The second end of the first support member may be pivotally connected to the second rail section. Movement of the first link relative to the second link may translate the pin in the slot and adjust a length of the first support member. In detail, when the tabletop is in the unfolded position, the center support member may be oriented substantially normal to a lower surface of the tabletop and the pin may be in contact with a first end of the slot. When the tabletop is in the folded position, the center support member may be disposed between the first rail section and the second rail section and the pin may be positioned between the first end and a second end of the slot.

Still another aspect is a folding table that may include a tabletop, a frame, a truss support structure, and one or more support structures. The tabletop may be movable between a folded position and an unfolded position. The tabletop may include a first tabletop section and a second tabletop section. The first tabletop section and the second tabletop section may generally be aligned in the same plane when the tabletop is in the unfolded position. The first tabletop section and the second tabletop section may be disposed generally adjacent and parallel to each other when the tabletop is in the folded position. The frame may be connected to the tabletop. The frame may include a first side rail with a first rail section connected to the first tabletop section and a second rail section connected to the second tabletop section. The frame may include a center cross member that extends across a center portion of the tabletop. The center cross member may be aligned with an axis of rotation about which the first tabletop section and the second tabletop section rotate between the folded and unfolded positions. The first rail section of the first side rail may be disposed a first distance from a first side of the tabletop. The second rail section of the first side rail may be disposed a second distance from the first side. The truss support structure may be disposed between the first rail section of the first side rail and the second rail section of the first side rail. The truss support structure may be connected to the frame. The truss support structure may extend across an interface between the first tabletop section and the second tabletop section when the tabletop is in the unfolded position, may be disposed between the first rail section and the second rail section of the first side rail when the tabletop is in the folded position, and may be configured to transfer a load applied to an upper surface of the tabletop to inward resultant forces that press the first tabletop section against the second tabletop section. The truss support structure may include a center support member coupled to the center cross member, a first support member connected to the center support member and to the first rail section, and a second support member connected to the center support member and to the second rail section. A length of the first support member may be adjustable. A length of the second support member may be adjustable. For example, the first support member may include a first link and a second link. The first link may include a pin or another engaging portion. The second link may define a slot or another receiving portion in which the pin is positioned. The first end of the first support member may be pivotally connected to the center support member and the second end of the first support member may be pivotally connected to the center support member. Translation of the pin in the slot may adjust the length of the first support member. In detail, when the tabletop is in the unfolded position, the center support member is oriented substantially normal to a lower surface of the tabletop and the pin is in contact with a first slot end of the slot. When the tabletop is in the folded position, the center support member may be disposed between the first rail section of the first side rail and the second rail section of the first rail and the pin may be positioned between the first slot end and a second slot end. In another example, a connecting member may be attached to the first rail section of the first side rail. The first support member may be a rod with a first end that is pivotally connected to the center support member and the rod may be slidably disposed within the connecting member. The one or more support structures may be configured to support the tabletop above a surface.

A further aspect is a folding table that may include a tabletop, a frame, a first truss support structure, a second truss support structure, a first support structure, and a second support structure. The tabletop may be movable between a folded position and an unfolded position. The tabletop may include a first tabletop section and a second tabletop section. The first tabletop section and the second tabletop section may be generally aligned in the same plane when the tabletop is in the unfolded position. The first tabletop section and the second tabletop section may be disposed generally adjacent and parallel to each other when the tabletop is in the folded position. The frame may be connected to the tabletop. The frame may include a first side rail with a first rail section connected to the first tabletop section and a second rail section connected to the second tabletop section, a second side rail that includes a first rail section connected to the first tabletop section and a second rail section connected to the second tabletop section, and a center cross member that extends across a center portion of the tabletop. The center cross member may be aligned with an axis of rotation about which the first tabletop section and the second tabletop section rotate between the folded and unfolded positions. The first rail section of the first side rail may include an interface end positioned at an interface between the first tabletop section and the second tabletop section. The second rail section of the first side rail may include an interface end positioned at the interface. The first rail section of the second side rail may include an interface end positioned at the interface. The second rail section of the second side rail may include an interface end positioned at the interface. The first rail section of the first side rail may define at least a portion of an opening at the interface end. The second rail section of the first side rail may define at least a portion of an opening at the interface end. The first rail section of the second side rail may define at least a portion of an opening at the interface end. The second rail section of the second side rail may define at least a portion of an opening at the interface end. The center cross member may be at least partially disposed in one or more of the openings. The first truss support structure may be connected to the first rail section of the first side rail, the second rail section of the first side rail, and the center cross member. The first truss support structure may be configured to extend across the interface between the first tabletop section and the second tabletop section when the tabletop is in the unfolded position and may be at least partially disposed between the first rail section of the first side rail and the second rail section of the first side rail when the tabletop is in the folded position. The second truss support structure may be connected to the first rail section of the second side rail, the second rail section of the second side rail, and the center cross member. The second truss support structure may be configured to extend across the interface when the tabletop is in the unfolded position and may be at least partially disposed between the first rail section of the second side rail and the second rail section of the second side rail when the tabletop is in the folded position. The first and second truss support structures may each include a center support member, a first support member, and a second support member. The center support members may each include a first end at which the center support members are coupled to the center cross member and a second end opposite the first end. The first support members and the second support members may be pivotally connected at the second ends of the center support members. In detail, when the tabletop is in the unfolded position, the center support members may extend substantially normal to a lower surface of the tabletop such that the second ends of the center support members are displaced from the lower surface of the tabletop. When the tabletop is in the folded position, the center support member of the first truss support structure may be at least partially disposed between the first rail section and the second rail section of the first side rail and the center support member of the second truss support structure may be disposed between the first rail section and the second rail section of the second side rail. The first support structure may be connected to the first tabletop section. The first support structure may be movable between an extended position and a collapsed position relative to the first tabletop section. The second support structure may be connected to the second tabletop section. The second support structure may be movable between an extended position and a collapsed position relative to the second tabletop section.

A still further aspect is a folding table that may include a tabletop, a frame, a first truss support structure, a second truss support structure, a first support structure, and a second support structure. The tabletop may be movable between a folded position and an unfolded position. The tabletop may include a first tabletop section and a second tabletop section. The first tabletop section and the second tabletop section may be generally aligned in the same plane when the tabletop is in the unfolded position. The first tabletop section and the second tabletop section may be disposed generally adjacent and parallel to each other when the tabletop is in the folded position. The frame may be connected to the tabletop. The frame may include a first side rail with a first rail section connected to the first tabletop section and a second rail section connected to the second tabletop section, a second side rail with a first rail section connected to the first tabletop section and a second rail section connected to the second tabletop section, and a center cross member that may extend across a center portion of the tabletop. The center cross member may be aligned with an axis of rotation about which the first tabletop section and the second tabletop section rotate between the folded and unfolded positions. The first truss support structure may be connected to the first rail section of the first side rail, the second rail section of the first side rail, and the center cross member. The first truss support structure may be configured to extend across the interface between the first tabletop section and the second tabletop section when the tabletop is in the unfolded position and may be disposed between the first rail section of the first side rail and the second rail section of the first side rail when the tabletop is in the folded position. The second truss support structure may be connected to the first rail section of the second side rail, the second rail section of the second side rail, and the center cross member. The second truss support structure may be configured to extend across the interface when the tabletop is in the unfolded position and may be disposed between the first rail section of the second side rail and the second rail section of the second side rail when the tabletop is in the folded position. The first and second truss support structures may each include a center support member, a first support member, and a second support member. The center support members may each include a first end at which the center support members are coupled to the center cross member and a second end opposite the first end. The first support members and the second support members may be pivotally connected at the second ends of the center support members. The folding table may include a first connecting member attached to the first rail section of the first side rail, a second connecting member attached to the second rail section of the first side rail, a third connecting member attached to the first rail section of the second side rail, and a fourth connecting member attached to the second rail section of the second side rail. The first support members and the second support members may be rods. The first adjusting mechanism may be positioned at an end of the first support member of the first truss support structure. A second adjusting mechanism may be positioned at an end of the second support member of the first truss support structure. A third adjusting mechanism may be positioned at an end of the first support member of the second truss support structure. A fourth adjusting mechanism may be positioned at an end of the second support member of the second truss support structure. The first support member of the first truss support structure may be slidably disposed within the first connecting member. The second support member of the first truss support structure may be slidably disposed within the second connecting member. The first support member of the second truss support structure may be slidably disposed within the third connecting member. The second support member of the second truss support structure may be slidably disposed within the fourth connecting member. In detail, when the tabletop is in the folded position, the ends of the first support members may be separated from the first and third connecting members such that portions of the first support members are positioned in the first and third connecting members and the ends of the second support members may be separated from the second and fourth connecting members such that portions of the second support members are positioned in the second and fourth connecting members. When the tabletop is in the unfolded position, the adjusting mechanisms may contact the connecting members. The first support structure may be connected to the first tabletop section. The first support structure may be movable between an extended position and a collapsed position relative to the first tabletop section. The second support structure may be connected to the second tabletop section. The second support structure may be movable between an extended position and a collapsed position relative to the second tabletop section.

Another further aspect is a folding table that may include a tabletop, a frame, a first truss support structure, a second truss support structure, a first support structure, and a second support structure. The tabletop may be movable between a folded position and an unfolded position. The tabletop may include a first tabletop section and a second tabletop section. The first tabletop section and the second tabletop section may be generally aligned in the same plane when the tabletop is in the unfolded position. The first tabletop section and the second tabletop section may be disposed generally adjacent and parallel to each other when the tabletop is in the folded position. The frame may be connected to the tabletop. The frame may include a first side rail that includes a first rail section connected to the first tabletop section and a second rail section connected to the second tabletop section, a second side rail that includes a first rail section connected to the first tabletop section and a second rail section connected to the second tabletop section, and a center cross member that extends across a center portion of the tabletop. The center cross member may be aligned with an axis of rotation about which the first tabletop section and the second tabletop section rotate between the folded and unfolded positions. The first truss support structure may be connected to the first rail section of the first side rail, the second rail section of the first side rail, and the center cross member. The first truss support structure may be configured to extend across the interface between the first tabletop section and the second tabletop section when the tabletop is in the unfolded position and may be disposed between the first rail section of the first side rail and the second rail section of the first side rail when the tabletop is in the folded position. The second truss support structure may be connected to the first rail section of the second side rail, the second rail section of the second side rail, and the center cross member. The second truss support structure may be configured to extend across the interface when the tabletop is in the unfolded position and may be disposed between the first rail section of the second side rail and the second rail section of the second side rail when the tabletop is in the folded position. The first and second truss support structures may each include a center support member, a first support member, and a second support member. The center support members may each include a first end at which the center support members are coupled to the center cross member and a second end opposite the first end. The first support members and the second support members may be pivotally connected at the second ends of the center support members. The first support members and the second support members may each include a first link that includes a pin or another engaging portion which may be translationally coupled to a second link that defines a slot or another receiving portion in which the pin of the first link is positioned. Movement of the first links relative to the second links translates the pins in the slots and adjusts lengths of the first and second support members. In detail, when the tabletop is in the unfolded position, the pins are in contact with first ends of the slots. When the tabletop is in the folded position, the pins are positioned between the first ends and second ends of the slots. The first support structure may be connected to the first tabletop section. The first support structure may be movable between an extended position and a collapsed position relative to the first tabletop section. The second support structure may be connected to the second tabletop section. The second support structure may be movable between an extended position and a collapsed position relative to the second tabletop section.

These and other aspects, features and advantages of the present invention will become more fully apparent from the following brief description of the drawings, the drawings, the detailed description of preferred embodiments and appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS

The appended drawings contain figures of preferred embodiments to further illustrate and clarify the above and other aspects, advantages and features of the present invention. It will be appreciated that these drawings depict only preferred embodiments of the invention and are not intended to limit its scope. The invention will be described and explained with additional specificity and detail through the use of the accompanying drawings in which:

FIG. 1 is an upper perspective view of an exemplary table in an unfolded position;

FIG. 2 is a front view of the table shown in FIG. 1;

FIG. 3 is a lower perspective view of the table shown in FIG. 1;

FIG. 4 is another lower perspective view of the table shown in FIG. 1, illustrating support structures in a collapsed position;

FIG. 5 is still another lower perspective view of the table shown in FIG. 1, illustrating the support structures in the collapsed position and the table in a transitional position;

FIG. 6 is an upper perspective view of the table shown in FIG. 1, illustrating the table in a folded position;

FIG. 7 is an upper perspective view of a portion of the table shown in FIG. 6, illustrating the table in the folded position and the support structures in the collapsed position;

FIG. 8 is an enlarged lower perspective view of a portion of the table shown in FIG. 1, illustrating a truss support structure and the table in the unfolded position;

FIG. 9 is another enlarged lower perspective view of a portion of the table shown in FIG. 1, illustrating the truss support structure and the table in the unfolded position;

FIG. 10 is an enlarged lower perspective view of a portion of the table shown in FIG. 1, illustrating the first truss support structure and the table in the transitional position;

FIG. 11 is another enlarged lower perspective view of a portion of the table shown in FIG. 1, illustrating the truss support structure and the table in the transitional position;

FIG. 12 is a cross-sectional side view of a portion of the table along lines 12-12 shown in FIG. 6;

FIG. 13 is an upper perspective view of an exemplary table in an unfolded position;

FIG. 14 is a front view of the table shown in FIG. 13;

FIG. 15 is a lower perspective view of the table shown in FIG. 13;

FIG. 16 is another lower perspective view of the table shown in FIG. 13, illustrating support structures in a collapsed position;

FIG. 17 is still another lower perspective view of the table shown in FIG. 13, illustrating the support structures in the collapsed position and the table in a transitional position;

FIG. 18 is an upper perspective view of the table shown in FIG. 13, illustrating the table in a folded position;

FIG. 19 is an upper perspective view of a portion of the table shown in FIG. 13, illustrating the table in the folded position and the support structures in the collapsed position;

FIG. 20 is an enlarged lower perspective view of a portion of the table shown in FIG. 13, illustrating a truss support structure and the table in the unfolded position;

FIG. 21 is another enlarged lower perspective view of a portion of the table shown in FIG. 13, illustrating the truss support structure and the table in the unfolded position;

FIG. 22 is an enlarged lower perspective view of a portion of the table shown in FIG. 13, illustrating the truss support structure and the table in the transitional position;

FIG. 23 is another enlarged lower perspective view of a portion of the table shown in FIG. 13, illustrating the truss support structure and the table in the transitional position;

FIG. 24 is a cross-sectional side view of a portion of the table along lines 24-24 shown in FIG. 18.

DETAILED DESCRIPTION OF SOME EXEMPLARY EMBODIMENTS

The present invention is directed towards folding tables. The principles of the present invention, however, are not limited to folding tables. It will be understood that, in light of the present disclosure, the tables and features disclosed herein can be successfully used in connection with other types of tables, furniture, and the like.

Additionally, to assist in the description of the tables, words such as top, bottom, front, rear, right, and left may be used to describe the accompanying figures. It will be appreciated that the tables can be disposed in other positions, used in a variety of situations and may perform a number of different functions. In addition, the drawings may be to scale and may illustrate various configurations, arrangements, aspects, and features of the table. It will be appreciated, however, that the tables may have other suitable shapes, sizes, configurations, and arrangements depending, for example, upon the intended use of the table. Further, the table may include any suitable number or combination of aspects, features and the like. A detailed description of exemplary embodiments of the tables now follows.

An exemplary table 10 according to at least one embodiment described in the disclosure, may include a tabletop 12 with an upper surface 14 (FIGS. 1, 2, and 6), a lower surface 16 (FIGS. 1-5 and 7), a first end 18 (FIGS. 1-6), a second end 20, a first side 22, and a second side 24 (FIGS. 1 and 3-7). The upper surface 14 of the tabletop 12 may have a generally planar configuration and may create a working surface. The tabletop 12 may also include an edge that is disposed about the outer perimeter or periphery of the tabletop 12. All or a portion of the edge may be beveled, sloped or rounded to, for example, increase the comfort and safety of the user.

As depicted in FIG. 3, the tabletop 12 may also include a lip 26. The lip 26 may be a downwardly extending lip 26 that is disposed near or at least proximate the outer portion or perimeter of the tabletop 12. The lip 26 may extend downwardly relative to the lower surface 16 of the tabletop 12 and the lip 26 may be aligned with or form a part of the edge of the tabletop 12. It will be appreciated that the lip 26 may also be spaced inwardly from the edge of the tabletop 12.

The tabletop 12 may have a generally rectangular configuration with rounded corners. The tabletop 12 may have a relatively large size and the table 10 may be configured for use as a banquet or utility table. For example, the tabletop 12 may have a length defined between the first end 18 and the second end 20 of about five feet (or about sixty inches) and a width defined between the first side 22 and the second side 24 of about two and one-half feet (or about thirty inches), but the tabletop 12 can be larger or smaller. For instance, embodiments of the tabletop 12 might include a length between about six and ten feet and a width of about two and three feet. One skilled in the art will appreciate the tabletop 12 can be larger or smaller; may have other suitable shapes and configurations such as square, circular, oval and the like; and the sides, corners, edges and other portions of the tabletop 12 could have various shapes, sizes, configurations and arrangements depending, for example, upon the intended use of the table. Further, the table 10 could be any suitable type of table such as a folding table, non-folding table, card table, personal table, round table, and the like. For instance, it will also be appreciated that the table 10 and its various components may have other shapes, sizes, configurations and arrangements, such as disclosed in U.S. Pat. Nos. 6,530,331; 7,111,563; 7,475,643; 7,814,844; and 7,975,625; each of which are incorporated by reference in its entirety. It will further be appreciated that the table 10 may also include any suitable number and combination of features and aspects depending, for example, upon the intended use of the table 10.

The tabletop 12 may be constructed from lightweight materials such as plastic. In particular, the tabletop 12 may be constructed from high density polyethylene but other suitable materials can be used. The tabletop 12 may be constructed from plastic and that may allow a relatively strong, lightweight, rigid, and sturdy tabletop to be quickly and easily manufactured. The tabletop 12 when constructed of plastic may also be relatively durable, weather resistant, temperature insensitive, corrosion resistant, rust resistant, and may not deteriorate or maintain structural integrity over time. The tabletop 12 could be constructed from plastics, polymers, synthetic materials and the like. The tabletop 12 could also be constructed from processes such as blow-molding, injection molding, rotational molding, rotary molding, etc. The tabletop 12 may be constructed from other materials with sufficient strength and desirable characteristics such as wood, metals, alloys, composites, fiberglass, ceramics, and the like. The tabletop 12 could be manufactured using one or more other suitable processes.

The table 10 may include one or more support structures 28A and 28B (generally, support structure 28 or support structures 28). The support structures 28 are sized and configured to support the tabletop 12 above a surface (not shown). For example, the table 10 may include a first support structure 28A and a second support structure 28B. The support structures 28 may include one or more legs or supports 30A-30D (generally, support 30 or supports 30).

The support structures 28 may be movable between an extended or use position, which is depicted in FIG. 3, and a collapsed or storage position, which is depicted in FIG. 4. In the extended or use position of FIG. 3, the supports 30 extend outwardly from the tabletop 12. In the collapsed or storage position of FIG. 4, the supports 30 are disposed at least proximate the tabletop 12. Although, FIGS. 1-7 depict the table 10 that includes two support structures 28 and four supports 30. In some embodiments, the table 10 may include any suitable number, shape, size, configuration, and arrangement of support structures 28 depending, for example, upon the intended use of the table 10.

Referring back to FIGS. 1-7, the table 10 may be a folding table. The tabletop 12 may include a first tabletop section 32A and a second tabletop section 32B. The first support structure 28A may be movable between the extended and collapsed positions relative to the first tabletop section 32A. The second support structure 28B may be movable between the extended and collapsed positions relative to the second tabletop section 32B. The first and second tabletop sections 32A and 32B may be rotatable about an axis of rotation 34 (hereinafter “axis 34”) between an unfolded position, which is depicted in FIGS. 1-4, and a folded position, which is depicted in FIGS. 6 and 7.

When the tabletop 12 is in the unfolded position of FIGS. 1-4, the first and second tabletop sections 32A and 32B may be generally aligned in the same plane. When the tabletop 12 is in the folded position of FIGS. 6 and 7, the first and second tabletop sections 32A and 32B may be disposed generally adjacent and parallel to each other. In addition, in the folded position of FIGS. 6 and 7, some or all of the components (e.g., 28, 30, 42A and 42B) may be positioned between the first and second tabletop sections 32A and 32B. For example, FIG. 7 depicts the table 10 in the folded position with the first tabletop section 32A removed.

Between the folded position and the unfolded positions, the table 10 may be in a transitional position, which is depicted in FIG. 5. In the transitional position, an angle 11 between the first tabletop section 32A and the second tabletop section 32B is between about zero degrees (e.g., in the folded position) and about 180 degrees (e.g., in the unfolded position). Some additional details of the folded position, the transitional position, and the unfolded position are provided elsewhere in this disclosure.

The first and second tabletop sections 32A and 32B may have a generally rectangular configuration with a symmetrical or mirror-image configuration. In the unfolded position, the first and second tabletop sections 32A and 32B may meet at an interface 78 (FIGS. 1-4 and 6). In some embodiments, the first tabletop section 32A and the second tabletop section 32B may include inner surfaces 36A and 36B (generally, inner surface 36 or inner surfaces 36) that are in contact or are adjacent to create the interface 78. The inner surface 36 of the first tabletop section 32A may be sized and configured to contact and/or engage the inner surface 36 of the second tabletop section 32B when the tabletop 12 is in the unfolded position. The inner surfaces 36 may then be spaced apart when the tabletop 12 is in the folded position. The inner surfaces 36 of the tabletop 12 may include one or more interlocking, overlapping, and/or intertwined portions, such as engaging and receiving portions, which may provide additional strength, stability, and/or rigidity to at least a center portion of the tabletop 12. For example, in FIG. 4, an example receiving portion 38 is visible. The tabletop 12 may also have other shapes, sizes, configurations, and arrangements. For example, the tabletop 12 may be similar to one or more of the tabletops shown in U.S. Pat. No. 7,096,799, which is incorporated by reference in its entirety.

Referring to FIG. 4, the table 10 may further include a frame 40 that is connected to the tabletop 12. The frame 40 may include an inner surface that is connected to the lower surface 16 of the tabletop 12. The frame 40 may include one or more side rails 42A and 42B (generally, side rail 42 or side rails 42). In particular, the embodiment of FIG. 4 includes a first side rail 42A and a second side rail 42B, which may extend along the length of the tabletop 12. The side rails 42 are preferably positioned near opposing edges and/or sides 22 and 24 of the tabletop 12. For example, the side rails 42 may be disposed at least proximate the lip 26 and there may be a gap or space between the side rails 42 and the lip 26. In FIG. 4, an example of the gap or the space between the side rails 42 and the lip 26 is labeled 44. The side rails 42 preferably extend almost the entire length of the tabletop 12, which may provide increased strength and rigidity for the tabletop 12. Alternatively, the side rails 42 may extend along only a portion of the tabletop 12.

In greater detail, the first side rail 42A may be disposed towards the first side 22 of the tabletop 12. The first side rail 42A may include a first rail section 46A that is connected to the first tabletop section 32A of the tabletop 12 and a second rail section 46B connected to the second tabletop section 32B of the tabletop 12. The first and second rail sections 46A and 46B of the first side rail 42A may be offset or spaced apart. For example, the first rail section 46A may be offset from the second rail section 46B in the z-direction in the arbitrarily defined coordinate system of FIGS. 1-7.

The second side rail 42B may be disposed towards the second side 24 of the tabletop 12. The second side rail 42B may include a first rail section 48A connected to the first tabletop section 32A of the tabletop 12 and a second rail section 48B connected to the second tabletop section 32B of the tabletop 12. The first and second rail sections 48A and 48B of the second side rail 42B may be offset or spaced apart. For example, the first rail section 48A may be offset from the second rail section 48B in the z-direction.

The support structures 28 may be connected to the frame 40. For example, a first cross member 50A may connect the frame 40 and the first support structure 28A and a second cross member 50B may connect the frame 40 and the second support structure 28B.

Ends of the first and second cross members 50A and 50B may be disposed may at least partially in openings in the side rails 42 of the frame 40 to allow the first and second cross members 50A and 50B to rotate relative to the frame 40. The first and second cross members 50A and 50B may form part of the frame 40 and/or the support structures 28, depending, for example, upon the particular arrangement and/or configuration of the table 10. For example, referring to FIGS. 3 and 4, transitioning the support structures 28 from the extended or use position of FIG. 3 to the collapsed or storage position of FIG. 4 may include rotation of the support structures 28 relative to the frame 40.

Referring back to FIG. 4, a center cross member or crossbar 52 (hereinafter, “center cross member 52”) may extend across a center portion of the tabletop 12. The first and second side rails 42 of the frame 40 may be pivotally connected to the center cross member 52 to allow the tabletop 12 to be moved between the unfolded and folded positions of FIGS. 1-4 and 6-7, respectively.

The center cross member 52 may be aligned with the axis 34 about which the tabletop 12 rotates to transition between the folded and the unfolded positions. The axis 34 may be located between an inner surface of the side rails 42 that contacts the lower surface 16 and an outer surface of the side rails 42 that may face away from the lower surface 16.

The center cross member 52 may be disposed in a fixed position relative to the tabletop 12 or it may pivot, rotate or more relative to the tabletop 12. For example, with reference to FIG. 5, the first rail section 46A of the first side rail 42A may include an interface end 3 that is positioned at least proximate the interface 78 between the first tabletop section 32A and the second tabletop section 32B. The second rail section 46B of the first side rail 42A may include an interface end 5 positioned at least proximate the interface 78. The first rail section 48A of the second side rail 42B may include an interface end 7 positioned at least proximate the interface 78. The second rail section 48B of the second side rail 42B may include an interface end 9 positioned at least proximate the interface 78.

The first rail section 46A of the first side rail 42A may define an opening at the interface end 3. The second rail section 46B of the first side rail 42A may define an opening at the interface end 5. The first rail section 48A of the second side rail 42B may define an opening at the interface end 7. The second rail section 48B of the second side rail 42B may define an opening at the interface end 9. The center cross member 52 may be at least partially disposed in the openings. Alternatively, the center cross member 52 may also be at least partially disposed in one or more receiving portions 38 in some embodiments.

The table 10 of FIGS. 1-7 may include one or more of truss support structures, such as a first truss support structure 54. For example, the table 10 of FIGS. 1-7 includes two embodiments of the first truss support structure 54. In other embodiments, the table 10 may include one truss support structure 54 or three or more truss support structures 54. The first truss support structure 54 may be connected to the frame 40 of the table 10. The first truss support structure 54 may extend across the interface 78 between the first tabletop section 32A and the second tabletop section 32B when the table 10 is in the unfolded position. For example, the first truss support structure 54 may extend from the first rail section 46A of the first side rail 42A to the second rail section 46B of the first side rail 42A or may extend from the first rail section 48A of the second side rail 42B to the second rail section 48B of the second side rail 42B when the table 10 is in the unfolded position.

In addition with reference to FIG. 7, the first truss support structure 54 may be at least partially disposed between the first rail section 46A of the first side rail 42A and the second rail section 46B of the first side rail 42A or between the first rail section 48A of the second side rail 42B and the second rail section 48B of the second side rail 42B.

The first truss support structure 54 may include a three member assembly. When the tabletop 12 is in the unfolded position, the three members of the truss support structure 54 may form at least a portion of two triangular units that act as trusses to support to the table 10. In particular, the first truss support structure 54 may be configured to provide support to the interface 78 where the first tabletop section 32A meets the second tabletop section 32B.

For example, with reference to FIG. 2, a load, which is represented by arrow 60, may be applied to the upper surface 14 of the tabletop 12 near the interface 78. For instance, the load 60 may be representative of an item placed on the tabletop 12. The load 60 may be substantially disposed in the negative y-direction and may result in a moment on the first tabletop section 32A and/or the second tabletop section 32B about the z-axis and/or a displacement of the first tabletop section 32A and/or of the second tabletop section 32B in the negative y-direction.

The first truss support structure 54 may transfer at least a portion of the load 60 to the frame 40. For example, a portion of the load 60 may reoriented into inward resultant forces 75 and 77 in the negative x direction and x direction, respectively. The inward resultant forces 75 and 77 may press the first tabletop section 32A against the second tabletop section 32B. Accordingly, the first truss support structure 54 may help counter the moment and/or prevent or reduce rotation about the z-axis. Additionally, the first truss support structure 54 may help counter the displacement. Thus, the first truss support structure 54 may enable larger loads to be placed on the tabletop 12 relative to the tables that do not include the first truss support structure 54.

FIGS. 8-11 illustrate detailed views of the first truss support structure 54 and portions of the table 10 of FIGS. 1-7. In particular, FIG. 8 depicts an enlarged lower perspective view of the first truss support structure 54 with the table 10 in the unfolded position, FIG. 9 depicts another enlarged lower perspective view of the first truss support structure 54 in the unfolded position, FIG. 10 depicts an enlarged lower perspective view of the first truss support structure 54 with a portion of the table 10 in the transitional position; and FIG. 11 depicts another enlarged lower perspective view of the first truss support structure 54 in the table 10 in the transitional position. FIGS. 8 and 10 depict the first truss support structure 54 attached to the tabletop 12 near the second side 24. FIGS. 9 and 11 depict the first truss support structure 54 attached to the tabletop 12 to the first side 22. After reviewing this disclosure, one of ordinary skill in the art will appreciate that the trusses, truss support structures, and the like may have other suitable shapes, sizes, configurations, and arrangements depending, for example, upon the intended use of the table 10.

As discussed above, the first truss support structure 54 is configured to transfer at least a portion of a load applied to an upper surface of the tabletop 12 to inward resultant forces that press the first tabletop section 32A against the second tabletop section 32B. The first truss support structure 54 may be connected to the frame 40. For example, the first truss support structure 54 may be connected to the first rail section 46A or 48A and the second rail section 46B or 48B of the one of the side rails 42A or 42B. The first truss support structure 54 may extend across the interface 78 between the first tabletop section 32A and the second tabletop section 32B when the tabletop 12 is in the unfolded position as shown in FIGS. 8 and 9.

The first truss support structure 54 may be at least partially disposed between the first rail section 46A or 48A and the second rail section 46B or 48B and may maintain this disposition throughout the folded position, the transitional position, and the unfolded position. The first truss support structure 54 may be at least partially disposed between the first rail section 46A or 48A and the second rail section 46B or 48B in the unfolded position as shown in FIGS. 8 and 9, and in the transitional position as shown in FIGS. 10 and 11. In addition, with reference to FIG. 7, when the tabletop 12 is in the folded position, the first truss support structure 54 may be at least partially disposed between the first rail section 46A or 48A and the second rail section 46B or 48B.

The first truss support structure 54 may include a center support member 62, a first support member 64, and a second support member 66. The center support member 62 of the first truss support structure 54 may be connected to the center cross member 52 of the tabletop 12. The center support member 62 of the first truss support structure 54 may be pivotally connected to the center cross member 52 or may be fixed to the center cross member 52.

The center support member 62 may be a generally flat, rounded rectangular structure. The center support member 62 may include a width in the x-direction that may be equal to or less than a height in the y-direction of the first rail section 48A and/or the second rail section 48B. It will be appreciated, after reviewing this disclosure, that the center support member 62 may have other suitable shapes, sizes, configurations, and arrangements depending, for example, upon the intended use of the table 10.

With reference to FIG. 8, the center support member 62 may include a first end 80. The center support member 62 may be coupled to the center cross member 52 at the first end 80. The center support member 62 may also include a second end 82 that is opposite the first end 80. As depicted in FIG. 8, when the tabletop 12 is in the unfolded position, the center support member 62 may extend substantially normal to the lower surface 16 of the tabletop 12 such that the second end 82 of the center support member 62 is displaced from the lower surface 16 of the tabletop 12.

With reference to FIGS. 8 and 9, in the depicted embodiment, the first and second support members 64 and 66 are substantially similar and are described together. In some embodiments, the first and second support members 64 and 66 may differ in structure.

The first and second support members 64 and 66 may be rods with a first end 68 and a second end 70 opposite the first end 68. The rods of FIGS. 8-11 are generally cylindrical, but might be rectangular or another suitable shape in other embodiments.

The first end 68 of the first and second support members 64 and 66 may be connected to the center support member 62. In greater detail, the first end 68 of the first and second support members 64 and 66 may be pivotally connected to the center support member 62. For instance, the first end 68 of the rod may be curved and inserted into an opening 72 defined in the second end 82 of the center support member 62.

One or more connecting members 74 may be attached to the frame 40. The connecting members 74 may be attached to the frame 40 between about one-third and about one-half of a distance from the center cross member 52 to the first or second end 18 or 20. The connecting members 74 may also be attached to the frame 40 between about one-half and two-thirds of the distance between the center cross member 52 and the first or second end 18 or 20. For instance, the connecting members 74 may be attached to the frame 40 at a distance generally equal to or less than one-half the length of the side rails of the frame, such about forty percent (40%), about thirty percent (30%), about twenty percent (20%) or less. The connecting members 74 may also be attached to the frame 40 at a distance generally equal to or greater than one-half the length of the side rails of the frame, such as about sixty percent (60%), about seventy percent (70%), about eighty percent (80%) or more. For example, the connecting member 74 may be attached to one of the rail sections 46A, 46B, 48A, and 48B. In particular, one of the connecting members 74 may be attached to the first rail section 46A of the first side rail 42A, another of the connecting members 74 may be attached to the second rail section 46B of the first side rail 42A, to the first rail section 48A of the second side rail 42B, and to the second rail section 48B of the second side rail 42B. The connecting members 74 may include a hollow cylinder or tube. An internal diameter of the connecting member 74 may be greater than an outer diameter of the first and second support members 64 and 66.

An adjusting mechanism 76 may be connected to the second end 70 of the first and second support members 64 and 66. An example of the adjustment mechanism 76 may include a nut that is threadably connected to the second end 70. The adjusting mechanism 76 may be used to adjust a length of the first and second support members 64 and 66. A diameter of the adjusting mechanism 76 may be greater than the inner diameter of the connecting member 74.

The second end 70 of the first and second support members 64 and 66 may be slidably connected to the connecting member 74. In particular, the first and second support members 64 and 66 may be slidably disposed within the connecting member 74. The connecting member 74 may allow a portion of the first and second support members 64 and 66 near the second end 70 to slide relative to the connecting member 74. For instance, the first and second support members 64 and 66 may move relative to the connecting member 74 in substantially the x-direction of FIGS. 8 and 9. The adjusting mechanism 76 may prevent the first and second support members 64 and 66 from sliding from the connecting member 74.

When the tabletop 12 is in the unfolded position as shown in FIGS. 8 and 9, the center support member 62 may extend substantially normal to the lower surface 16 of the tabletop 12 and the adjusting mechanisms 76 may contact the connecting members 74.

When the tabletop 12 is in the transitional position between the folded and the unfolded position as shown in FIGS. 10 and 11, the first tabletop section 32A may be at an angle between about 180 degrees and about zero degrees relative to the second tabletop section 32B. The adjusting mechanism 76 may be separated or spaced apart from the connecting member 74. A portion 84 of the first and second support members 64 and 66 may be positioned within the connecting member 74.

With reference to FIG. 7, when the tabletop 12 is in the folded position, the center support member 62 may be at least partially disposed between the first rail section 46A or 48A and the second rail section 46B or 48B. The second end 70 of the first and second support members 64 and 66 may be separated from the connecting member 74 such that a portion 86 of the first and second support member 64 and 66 between the first end 68 and the second end 70 is positioned in the connecting member 74.

FIG. 12 is a cross-sectional side view of a portion of the table 10 of FIGS. 1-7. The cross-sectional view of FIG. 12 is along lines 12-12 of FIG. 6. In FIG. 12, a cross-sectional view of the tabletop 12, the supports 30B and 30D, the first rail section 48A, the second rail section 48B, and the first truss support structure 54 are depicted. End views of the connecting members 74 are shown in FIG. 12.

As shown in the accompanying figures, the first rail section 48A and the second rail section 48B may be disposed in an offset configuration. The offset configuration refers to distances 88 and 90 of the first rail section 48A and the second rail section 48B from the second side 24. For example, the first rail section 48A may be disposed a first distance 88 from the second side 24 of the tabletop 12. The second rail section 48B may be disposed a second distance 90 from the second side 24 and thus displaced in the z-direction from the first rail section 48A. The offset configuration may enable the first truss support structure 54 to be disposed between the first rail section 48A and the second rail section 48B.

In addition, each of the first rail section 48A and the second rail section 48B may include an outer surface 92 and an inner surface 94. The inner surface 94 may contact and may be attached to the lower surface 16 of the tabletop 12. For instance, the first rail section 48A may attach to the first tabletop section 32A at the inner surface 94 and the second rail section 48B may attach to the second tabletop section 32B at the inner surface 94. When the tabletop 12 is in the unfolded position, the outer surface 92 may face away from the lower surface 16 of the tabletop 12. As shown in FIG. 12, when the tabletop 12 is in the folded position, the outer surface 92 of the first rail section 48A and the second rail section 48B may contact the lower surface 16 of the tabletop 12.

Additionally, the supports 30B and 30D may be displaced in the z-direction from one another and from the first rail section 48A and the second rail section 48B. In the folded position each of the supports 30B and 30D and the first rail section 48A and the second rail section 48B may contact the lower surface 16.

In addition, the connecting member 74 attached to the first rail section 48A may be displaced in an x-direction from the connecting member 74 attached to the second rail section 48B. Accordingly, in the folded position, the connecting member 74 attached to the first rail section 48A may both fit in the distance between the first rail section 48A and the second rail section 48B.

FIG. 12 depicts the portion of the table 10 that includes the second side 24, the first rail section 48A, and the second rail section 48B of the second side rail 42B. The offset configuration may also apply to the portion of the table 10 that includes the first side 22, the first rail section 46A, and the second rail section 46B of the first side rail 42A.

FIGS. 13-19 depict another exemplary embodiment of a table that may include one or more features or aspects of the table 10 described with reference to FIGS. 1-7. Because the exemplary tables shown in the accompanying figures may have one or more similar features and aspects, the tables may simply be referred to as the table 10. It will be appreciated, after reviewing this disclosure, that the tables may have one or more different features or aspects. It will also be appreciated, after reviewing this disclosure, that the tables could have other suitable shapes, sizes, configurations and arrangements. It will be further appreciated that the tables could have other features and aspects depending, for example, upon the intended use of the table. The table 10 shown in FIGS. 13-19 includes one or more truss support structures, such as a second truss support structure 15. The second truss support structure 15 may be configured to provide support to the table 10.

The table 10 of FIGS. 13-19, includes the tabletop 12 with the upper surface 14 (FIGS. 13, 14, and 18), the lower surface 16 (FIGS. 13-17 and 19), the first end 18 (FIGS. 13-18), the second end 20, the first side 22, and the second side 24 (FIGS. 13 and 15-19). The tabletop 12, the upper surface 14, the lower surface 16, the first end 18, the second end 20, the first side 22, and the second side 24 are as described with reference to the table 10 of FIGS. 1-7. For example, the upper surface 14 of the tabletop 12 may have a generally planar configuration and may create a working surface. The tabletop 12 may also include an edge that is disposed about the outer perimeter or periphery of the tabletop 12. All or a portion of the edge may be beveled, sloped or rounded to, for example, increase the comfort and safety of the user.

As best depicted in FIG. 15, the tabletop 12 may also include the lip 26. The lip 26 may be a downwardly extending lip 26 that is disposed near or at least proximate the outer portion or perimeter of the tabletop 12. The lip 26 may extend downwardly relative to the lower surface 16 of the tabletop 12 and the lip 26 may be aligned with or form a part of the edge of the tabletop 12. The lip 26 may also be spaced inwardly from the edge of the tabletop 12.

Referring back to FIGS. 13-19, the tabletop 12 may have a generally rectangular configuration with rounded corners. The tabletop 12 may have a relatively large size and the table 10 may be configured for use as a banquet or utility table. For example, the tabletop 12 may have a length defined between the first end 18 and the second end 20 of about five feet (or about sixty inches) and a width defined between the first side 22 and the second side 24 of about two and one-half feet (or about thirty inches), but the tabletop 12 can be larger or smaller. For instance, embodiments of the tabletop 12 might include a length between about six and ten feet and a width of about two and three feet. One skilled in the art will appreciate the tabletop 12 can be larger or smaller; may have other suitable shapes and configurations such as square, circular, oval and the like; and the sides, corners, edges and other portions of the tabletop 12 could have various shapes, sizes, configurations and arrangements depending, for example, upon the intended use of the table. Further, the table 10 could be any suitable type of table such as a folding table, non-folding table, card table, personal table, round table, and the like. For instance, the table 10 and its various components may have other shapes, sizes, configurations and arrangements, such as disclosed in U.S. Pat. Nos. 6,530,331; 7,111,563; 7,475,643; 7,814,844; and 7,975,625; each of which are incorporated by reference in its entirety. The table 10 may also include any suitable number and combination of features and aspects depending, for example, upon the intended use of the table 10.

The table 10 may include the support structures 28. The support structures 28 are sized and configured to support the tabletop 12 above a surface (not shown). For example, the table 10 may include the first support structure 28A and the second support structure 28B. The support structures 28 may include the supports 30.

With reference to FIGS. 15 and 16, the support structures 28 may be movable between an extended or use position, which is depicted in FIG. 15, and a collapsed or storage position, which is depicted in FIG. 16. In the extended or use position of FIG. 15, the supports 30 may extend outwardly from the tabletop 12. In the collapsed or storage position of FIG. 16, the supports 30 may be disposed at least proximate the tabletop 12. Although, FIGS. 13-19 depict the table 10 that includes two support structures 28 and four supports 30, in some embodiments, the table 10 may include any suitable number, shape, size, configuration, and arrangement of support structures 28 depending, for example, upon the intended use of the table 10.

Referring back to FIGS. 13-19, the table 10 may be a folding table. The tabletop 12 may include the first tabletop section 32A (FIGS. 13-18) and the second tabletop section 32B. The first support structure 28A may be movable between the extended and collapsed positions relative to the first tabletop section 32A. The second support structure 28B may be movable between the extended and collapsed positions relative to the second tabletop section 32B. The first and second tabletop sections 32A and 32B may be rotatable about the axis 34 between an unfolded position, which is depicted in FIGS. 13-16, and a folded position, which is depicted in FIGS. 18 and 19.

When the tabletop 12 is in the unfolded position of FIGS. 13-16, the first and second tabletop sections 32A and 32B may be generally aligned in the same plane. When the tabletop 12 is in the folded position of FIGS. 18 and 19, the first and second tabletop sections 32A and 32B may be disposed generally adjacent and parallel to each other. In addition, in the folded position of FIGS. 18 and 19, the components (e.g., 28, 30, 42A and 42B) may be disposed between the first and second tabletop sections 32A and 32B. For example, FIG. 19 depicts the table 10 in the folded position with the first tabletop section 32A removed.

Between the folded position and the unfolded positions, the table 10 may be in a transitional position, which is depicted in FIG. 17. In the transitional position, an angle 11 between the first tabletop section 32A and the second tabletop section 32B may be between about zero degrees (e.g., in the folded position) and about 180 degrees (e.g., in the unfolded position). Some additional details of the folded position, the transitional position, and the unfolded positions are provided elsewhere in this disclosure.

The first and second tabletop sections 32A and 32B may have a generally rectangular configuration with a symmetrical or mirror-image configuration. In the unfolded position, the first and second tabletop sections 32A and 32B may meet at the interface 78 (FIGS. 13-17). In some embodiments, the first tabletop section 32A and the second tabletop section 32B may include the inner surfaces 36 that are in contact or are adjacent to create the interface 78. The inner surface 36 of the first tabletop section 32A may be sized and configured to contact and/or engage the inner surface 36 of the second tabletop section 32B when the tabletop 12 is in the unfolded position. The inner surfaces 36 may then be spaced apart when the tabletop 12 is in the folded position. The inner surfaces 36 of the tabletop 12 may include one or more interlocking, overlapping, and/or intertwined portions, such as engaging and receiving portions, which may provide additional strength, stability, and/or rigidity to at least a center portion of the tabletop 12. For example, in FIG. 16, an example receiving portion 38 is visible. The tabletop 12 may also have other shapes, sizes, configurations, and arrangements. For example, the tabletop 12 may be similar to one or more of the tabletops shown in U.S. Pat. No. 7,096,799, which is incorporated by reference in its entirety.

Referring to FIG. 16, the table 10 may further include the frame 40 that is connected to the tabletop 12. The frame 40 may include the inner surface that is connected to the lower surface 16 of the tabletop 12. The frame 40 may include the side rails 42A and 42B (generally, side rail 42 or side rails 42). In particular, the embodiment of FIG. 16 includes the first side rail 42A and the second side rail 42B, which may extend along the length of the tabletop 12. The side rails 42 are preferably positioned near opposing edges and/or sides 22 and 24 of the tabletop 12. For example, the side rails 42 may be disposed at least proximate the lip 26 and there may be a gap or space between the side rails 42 and the lip 26. In FIG. 16, an example of the gap or the space between the side rails 42 and the lip 26 is labeled 44. The side rails 42 preferably extend almost the entire length of the tabletop 12, which may provide increased strength and rigidity for the tabletop 12. Alternatively, the side rails 42 may extend along only a portion of the tabletop 12.

In greater detail, the first side rail 42A may be disposed towards the first side 22 of the tabletop 12. The first side rail 42A may include the first rail section 46A connected to the first tabletop section 32A of the tabletop 12 and the second rail section 46B connected to the second tabletop section 32B of the tabletop 12. The first and second rail sections 46A and 46B of the first side rail 42A may be offset or spaced apart. For example, the first rail section 46A may be offset from the second rail section 46B in the z-direction in the arbitrarily defined coordinate system of FIGS. 13-19.

The second side rail 42B may be disposed towards the second side 24 of the tabletop 12. The second side rail 42B may include the first rail section 48A connected to the first tabletop section 32A of the tabletop 12 and the second rail section 48B connected to the second tabletop section 32B of the tabletop 12. The first and second rail sections 48A and 48B of the second side rail 42B may be offset or spaced apart. For example, the first rail section 48A may be offset from the second rail section 48B in the z-direction.

The support structures 28 may be connected to the frame 40. For example, the first cross member 50A may connect the frame 40 and the first support structure 28A and the second cross member 50B may connect the frame 40 and the second support structure 28B.

Ends of the first and second cross members 50A and 50B may be disposed in openings in the side rails 42 of the frame 40 to allow the first and second cross members 50A and 50B to rotate relative to the frame 40. The first and second cross members 50A and 50B may form part of the frame 40 and/or the support structures 28, depending, for example, upon the particular arrangement and/or configuration of the table 10. For example, referring to FIGS. 15 and 16, transitioning the support structures 28 from the extended or use position of FIG. 15 to the collapsed or storage position of FIG. 16 may include rotation of the support structures 28 relative to the frame 40.

Referring back to FIG. 16, the center cross member 52 may extend across a center portion of the tabletop 12. The side rails 42 of the frame 40 may be pivotally connected to the center cross member 52 to allow the tabletop 12 to be moved between the unfolded and folded positions of FIGS. 13-16 and 18-19, respectively.

The center cross member 52 may be aligned with the axis 34 about which the tabletop 12 rotates to transition between the folded and the unfolded positions. The axis 34 may be located between an inner surface of the side rails 42 that contacts the lower surface 16 and an outer surface of the side rails 42 that face away from the lower surface 16.

The center cross member 52 may be disposed in a fixed position relative to the tabletop 12 or it may pivot or rotate relative to the tabletop 12. For example, with reference to FIG. 17, the first rail section 46A of the first side rail 42A may include an interface end 3 that is disposed at least proximate the interface 78 between the first tabletop section 32A and the second tabletop section 32B. The second rail section 46B of the first side rail 42A may include an interface end 5 disposed at least proximate the interface 78. The first rail section 48A of the second side rail 42B may include an interface end 7 disposed at least proximate the interface 78. The second rail section 48B of the second side rail 42B may include an interface end 9 disposed at least proximate the interface 78.

The first rail section 46A of the first side rail 42A may define at least a portion of an opening at the interface end 3. The second rail section 46B of the first side rail 42A may define at least a portion of an opening at the interface end 5. The first rail section 48A of the second side rail 42B may define at least a portion of an opening at the interface end 7. The second rail section 48B of the second side rail 42B may define at least a portion of an opening at the interface end 9. The center cross member 52 may be at least partially disposed in the openings. Alternatively, the center cross member 52 may also be disposed in one or more receiving portions 38 in some embodiments.

The table 10 of FIGS. 13-19 may include one or more truss support structures such as the second truss support structure 15. For example the table 10 of FIGS. 13-19 includes two embodiments of the second truss support structure 15. In other embodiments, the table 10 may include one truss support structure 15 or three or more truss support structures 15. The second truss support structure 15 may be connected to the frame 40 of the table 10. The second truss support structure 15 may extend across the interface 78 between the first tabletop section 32A and the second tabletop section 32B when the table 10 is in the unfolded position. For example, the second truss support structure 15 may extend from the first rail section 46A of the first side rail 42A to the second rail section 46B of the first side rail 42A or may extend from the first rail section 48A of the second side rail 42B to the second rail section 48B of the second side rail 42B when the table 10 is in the unfolded position.

In addition with reference to FIG. 19, the second truss support structure 15 may be at least partially disposed between the first rail section 46A of the first side rail 42A and the second rail section 46B of the first side rail 42A or between the first rail section 48A of the second side rail 42B and the second rail section 48B of the second side rail 42B.

The second truss support structure 15 may include a three member assembly. When the tabletop 12 is in the unfolded position, the three members of the first truss support structure 15 may form at least a portion of make two triangular units that act as trusses to support the table 10. In particular, the second truss support structure 15 may be configured to provide support to the interface 78 where the first tabletop section 32A meets the second tabletop section 32B.

For example, with reference to FIG. 14, the load 60 may be applied to the upper surface 14 of the tabletop 12 near the interface 78. For instance, the load 60 may be representative of an item placed on the tabletop 12. The load 60 may be disposed substantially in the negative y-direction and may result in a moment on the first tabletop section 32A and/or the second tabletop section 32B about the z-axis and/or a displacement of the first tabletop section 32A or of the second tabletop section 32B in the negative y-direction.

The second truss support structure 15 may transfer at least a portion of the load 60 to the frame 40. For example, a portion of the load 60 may be reoriented into inward resultant forces 75 and 77 in the negative x direction and x direction, respectively. The inward resultant forces 75 and 77 may press the first tabletop section 32A against the second tabletop section 32B. Accordingly, the second truss support structure 15 may help counter the moment and prevent or reduce rotation about the z-axis. Additionally, the second truss support structure 15 may help counter the displacement. Thus, the second truss support structure 15 may enable larger loads to be placed on the tabletop 12 relative to the tables that do not include the second truss support structure 15.

FIGS. 20-23 illustrate detailed views of the second truss support structure 15 and portions of the table 10 of FIGS. 13-19. In particular, FIG. 20 depicts an enlarged lower perspective view of the second truss support structure 15 with the table 10 in the unfolded position, FIG. 21 depicts another enlarged lower perspective view of the second truss support structure 15 in the unfolded position, FIG. 22 depicts an enlarged lower perspective view of the second truss support structure 15 with a portion of the table 10 in the transitional position; and FIG. 23 depicts another enlarged lower perspective view of the second truss support structure 15 in the table 10 in the transitional position. FIGS. 20 and 22 depict the second truss support structure 15 attached to the tabletop 12 near the second side 24. FIGS. 21 and 23 depict the second truss support structure 15 attached to the tabletop 12 to the first side 22.

As discussed above, the second truss support structure 15 may be configured to transfer a load applied to an upper surface of the tabletop 12 to inward resultant forces that press the first tabletop section 32A against the second tabletop section 32B. The second truss support structure 15 may be connected to the frame 40. For example, the second truss support structure 15 may be connected to the first rail section 46A or 48A and the second rail section 46B or 48B of the one of the side rails 42A or 42B. The second truss support structure 15 may extend across the interface 78 between the first tabletop section 32A and the second tabletop section 32B when the tabletop 12 is in the unfolded position as shown in FIGS. 20 and 21.

The second truss support structure 15 may be at least partially disposed between the first rail section 46A or 48A and the second rail section 46B or 48B and may maintain this disposition throughout the folded position, the transitional position, and unfolded position. The second truss support structure 15 may be disposed between the first rail section 46A or 48A and the second rail section 46B or 48B in the unfolded position as shown in FIGS. 20 and 21 and in the transitional position as shown in FIGS. 22 and 23. In addition, with reference to FIG. 19, when the tabletop 12 is in the folded position, the second truss support structure 15 may be disposed between the first rail section 46A or 48A and the second rail section 46B or 48B.

The second truss support structure 15 may include a center support member 61, a first support member 63, and a second support member 65. The center support member 61 of the second truss support structure 15 may be connected to the center cross member 52 of the tabletop 12. The center support member 61 of the first truss support structure 54 may be pivotally connected to the center cross member 52 or may be fixed to the center cross member 52.

The center support member 61 may be a generally flat, rounded rectangular structure. The center support member 61 may include a width in the x-direction that may be equal to or less than a height in the y-direction of the first rail section 48A and/or the second rail section 48B.

With reference to FIG. 20, the center support member 61 may include a first end 80. The center support member 61 may be coupled to the center cross member 52 at the first end 80. The center support member 61 may also include a second end 82 that is opposite the first end 80. As depicted in FIG. 20, when the tabletop 12 is in the unfolded position, the center support member 61 may extend substantially normal to the lower surface 16 of the tabletop 12 such that the second end 82 of the center support member 61 is displaced from the lower surface 16 of the tabletop 12.

In the embodiment depicted in FIGS. 20-23, the first and second support members 63 and 65 are substantially similar and are described together. In some embodiments, the first and second support members 63 and 65 may differ in structure.

With reference to FIGS. 20 and 21, the first and second support members 63 and 65 include lengths that are adjustable. The lengths of the first and second support members 63 and 65 may be defined between a first end 21 of the support members 63 and 65 and a second end 23 of the support members 63 and 65. The first end 21 of the support members 63 and 65 may be pivotally connected to the center support member 61 at the second end 82. The second end 23 of the support members 63 and 65 may be connected to a portion of the frame 40 such as a rail section 46A, 46B, 48A, or 48B.

The first and second support members 63 and 65 include a first link 17 translationally coupled to a second link 19. Movement of the first link 17 relative to the second link 19 may adjust lengths of the first and second support members 63 and 65. For example, in the depicted embodiment, the first link 17 may include a pin 25 and the second link 19 may define a slot 27. The pin 25 may be disposed in the slot 27. Movement of the first link 17 relative to the second link 19 may translate the pin 25 in the slot 27 and adjust the length of the first and second support members 63 and 65.

Although FIGS. 20-23 depict the first and second support members 63 and 65 with the first link 17 and the second link 19, in other embodiments, one or both of the first and second support members 63 and 65 may include a telescoping link. Moreover, in some embodiments, the table 10 may include one of the first and second support members 63 and 65 described with reference to FIGS. 20-23 and one of the first and second support members 64 and 66 described with reference to FIGS. 8-11.

With reference to FIGS. 20 and 21, when the pin 25 is in contact with a first end 29 of the slot 27, the length of the first and second support members 63 and 65 may be at their maximum lengths. With reference to FIGS. 21, 22, and 23, when the pin 25 is between the first end 29 of the slot 27 and a second end 31 of the slot 27, the length of the first and second support members 63 and 65 may be shorter than the maximum lengths.

When the tabletop 12 is in the unfolded position as shown in FIGS. 20 and 21, the center support member 61 may extend substantially normal to the lower surface 16 of the tabletop 12. In addition, the pin 25 may be in contact with the first end 29 of the slot 27.

When the tabletop 12 is in the transitional position between the folded and the unfolded position as shown in FIGS. 22 and 23, the first tabletop section 32A may be at an angle between about 180 degrees and about zero degrees relative to second tabletop section 32B. The center support member 61 may extend at some angle from the lower surface 16. In addition, the pins 25 may be positioned between the first end 21 (not shown in FIGS. 22 and 23) and a second end 31 of the slot 27.

With reference to FIGS. 19 and 21, when the tabletop 12 is in the folded position, the center support member 61 may be at least partially disposed between the first rail section 46A or 48A and the second rail section 46B or 48B and the pin 25 may be positioned between the first end 29 of the slot 27 and the second end 31 of the slot 27.

As described above, the first link 17 may include the pin 25 and the second link 19 may define the slot 17. The pin 25 is an example of an engaging portion that the first link 17 may include. The slot 17 is an example of a receiving portion that the second link 19 may include. One skilled in the art will appreciate the first link 17 may include one or more other engaging portions and the second link 19 may include one or more other receiving portions. The other engaging portions and the other receiving portions may function substantially similarly to the pin 25 and the slot 27.

FIG. 24 is a cross-sectional side view of a portion of the table 10 of FIGS. 13-19. The cross-sectional view of FIG. 24 is along lines 24-24 of FIG. 18. In FIG. 24, a cross-sectional view of the tabletop 12, the supports 30B and 30D, the first rail section 48A, the second rail section 48B, and the second truss support structure 15 are depicted.

The first rail section 48A and the second rail section 48B may be disposed in an offset configuration. The offset configuration refers to distances 88 and 90 of the first rail section 48A and the second rail section 48B from the second side 24. For example, the first rail section 48A may be disposed a first distance 88 from the second side 24 of the tabletop 12. The second rail section 48B may be disposed a second distance 90 from the second side 24 and thus displaced in the z-direction from the first rail section 48A. The offset configuration enables the second truss support structure 15 to be disposed between the first rail section 48A and the second rail section 48B.

In addition, each of the first rail section 48A and the second rail section 48B may include an outer surface 92 and an inner surface 94. The inner surface 94 may contact and may be attached to the lower surface 16 of the tabletop 12. For instance, the first rail section 48A may attach to the first tabletop section 32A at the inner surface 94 and the second rail section 48B may attach to the second tabletop section 32B at the inner surface 94. When the tabletop 12 is in the unfolded position, the outer surface 92 may face away from the lower surface 16 of the tabletop 12. As shown in FIG. 24, when the tabletop 12 is in the folded position, the outer surface 92 of the first rail section 48A and the second rail section 48B may contact the lower surface 16 of the tabletop 12.

Additionally, the supports 30B and 30D may be displaced in the z-direction from one another and from the first rail section 48A and the second rail section 48B. In the folded position each of the supports 30B and 30D and the first rail section 48A and the second rail section 48B may contact the lower surface 16.

FIG. 24 depicts the portion of the table 10 that includes the second side 24, the first rail section 48A, and the second rail section 48B of the second side rail 42B. The offset configuration may also apply to the portion of the table 10 that includes the first side 22, the first rail section 46A, and the second rail section 46B of the first side rail 42A.

Although this invention has been described in terms of certain preferred embodiments, other embodiments apparent to those of ordinary skill in the art are also within the scope of this invention. Accordingly, the scope of the invention is intended to be defined only by the claims which follow. 

What is claimed is:
 1. A folding table comprising: a tabletop that is movable between a folded position and an unfolded position, the tabletop comprising: a first tabletop section; and a second tabletop section, the first tabletop section and the second tabletop section generally aligned in the same plane when the tabletop is in the unfolded position, and the first tabletop section and the second tabletop section disposed generally adjacent and parallel to each other when the tabletop is in the folded position; a frame connected to the tabletop, the frame comprising a side rail that includes a first rail section connected to the first tabletop section and a second rail section connected to the second tabletop section; a truss support structure connected to the first rail section and the second rail section of the side rail, the truss support structure extending across an interface between the first tabletop section and the second tabletop section when the tabletop is in the unfolded position; and one or more support structures configured to support the tabletop above a surface.
 2. The folding table as in claim 1, wherein: the first rail section and the second rail section are disposed in an offset configuration, the truss support structure at least partially disposed between the first rail section and the second rail section; and the offset configuration enables an outer surface of the first rail section and an outer surface of the second rail section to both contact a lower surface of the tabletop when the tabletop is in the folded position.
 3. The folding table as in claim 1, further comprising: a first opening at least partially defined by the first rail section; a second opening at least partially defined by the second rail section; a center cross member of a frame that is at least partially disposed in the first opening and the second opening, the center cross member being aligned with an axis of rotation about which the frame rotates between the folded and unfolded positions, the axis of rotation being located between an outer surface of the side rail and an inner surface of the side rail; a center support member of the truss support structure that is coupled to the center cross member; a first support member of the truss support structure comprising a first end connected to the center support member and a second end connected to the first rail section; and a second support member of the truss support structure comprising a first end connected to the center support member and a second end connected to the second rail section.
 4. The folding table as in claim 3, further comprising: a connecting member attached to the first rail section; a first end of the first support member pivotally connected to the center support member; and a second end of the first support member includes an adjusting mechanism; wherein the first support member is slidably disposed within the connecting member.
 5. The folding table as in claim 4, wherein: when the tabletop is in the folded position, the center support member is at least substantially disposed between the first rail section and the second rail section and the second end of the first support member is spaced apart from the connecting member; and when the tabletop is in the unfolded position, the center support member is disposed substantially normal to a lower surface of the tabletop, the second end of the first support member is disposed at least proximate the connecting member, and the adjusting mechanism contacts the connecting member.
 6. The folding table as in claim 3, wherein: the first support member comprises a first link including an engaging portion and a second link including a receiving portion, the engaging portion slidably disposed in the receiving portion; the first end of the first support member pivotally connected to the center support member; the second end of the first support member pivotally connected to the second rail section; and movement of the first link relative to the second link causes movement of the engaging portion within the receiving portion and adjusts a length of the first support member.
 7. The folding table as in claim 6, wherein: when the tabletop is in the unfolded position, the center support member is disposed at least substantially normal to a lower surface of the tabletop and the engaging portion contacts a first end of the receiving portion; and when the tabletop is in the folded position, the center support member is at least substantially disposed between the first rail section and the second rail section and the engaging portion is positioned between the first end and a second end of the receiving portion.
 8. The folding table as in claim 3, wherein: a first end of the center support member is coupled to the center cross member; the first support member and the second support member are connected at a second end of the center support member; and when the tabletop is in the unfolded position, the center support member is disposed at least substantially normal to a lower surface of the tabletop such that the second end of the center support member is displaced from the lower surface of the tabletop.
 9. A folding table comprising: a tabletop that is movable between a folded position and an unfolded position, the tabletop comprising: a first tabletop section; and a second tabletop section, the first tabletop section and the second tabletop section generally aligned in the same plane when the tabletop is in the unfolded position, the first tabletop section and the second tabletop section disposed generally adjacent and parallel to each other when the tabletop is in the folded position; a frame connected to the tabletop, the frame comprising a first side rail that includes a first rail section connected to the first tabletop section and a second rail section connected to the second tabletop section; a truss support structure connected to the frame, the truss support structure extending across an interface between the first tabletop section and the second tabletop section when the tabletop is in the unfolded position, the truss support structure at least disposed between the first rail section and the second rail section when the tabletop is in the folded position, and the truss support structure configured to transfer at least a portion of a load applied to an upper surface of the tabletop into inward resultant forces that press the first tabletop section against the second tabletop section; and one or more support structures configured to support the tabletop above a surface.
 10. The folding table as in claim 9, wherein: the frame includes a center cross member that extends across a center portion of the tabletop, the center cross member being aligned with an axis of rotation about which the first tabletop section and the second tabletop section rotate between the folded and unfolded positions; and the truss support structure comprises: a center support member coupled to the center cross member; a first support member connected to the center support member and to the first rail section; and a second support member connected to the center support member and to the second rail section.
 11. The folding table as in claim 10, wherein: a length of the first support member is adjustable; and a length of the second support member is adjustable.
 12. The folding table as in claim 11, wherein: the first support member comprises a first link including a pin and a second link including a slot, the pin disposed in the slot; a first end of the first support member is pivotally connected to the center support member; a second end of the first support member is pivotally connected to the frame; and translation of the pin in the slot adjusts the length of the first support member.
 13. The folding table as in claim 12, wherein: when the tabletop is in the unfolded position, the center support member is disposed at least substantially normal to a lower surface of the tabletop and the pin is in contact with a first end of the slot; and when the tabletop is in the folded position, the center support member is at least substantially disposed between the first rail section of the first side rail and the second rail section of the first rail; and the pin is positioned between the first end and a second end of the slot.
 14. The folding table as in claim 10, further comprising: a connecting member attached to the first rail section of the first side rail, the first support member comprising a generally cylindrical rod with a first end pivotally connected to the center support member and the rod slidably disposed within the connecting member.
 15. The folding table as in claim 9, wherein: the first rail section of the first side rail is disposed a first distance from a first side of the tabletop; the second rail section of the first side rail is disposed a second distance from the first side, the first distance being different from the second distance; and the truss support structure is at least partially disposed between the first rail section of the first side rail and the second rail section of the first side rail.
 16. A folding table comprising: a tabletop that is movable between a folded position and an unfolded position, the tabletop comprising: a first tabletop section; and a second tabletop section, the first tabletop section and the second tabletop section generally aligned in the same plane when the tabletop is in the unfolded position, and the first tabletop section and the second tabletop section disposed generally adjacent and parallel to each other when the tabletop is in the folded position; a frame connected to the tabletop, the frame comprising: a first side rail that includes a first rail section connected to the first tabletop section and a second rail section connected to the second tabletop section; a second side rail that includes a first rail section connected to the first tabletop section and a second rail section connected to the second tabletop section; and a center cross member that extends across a center portion of the tabletop, the center cross member being aligned with an axis of rotation about which the first tabletop section and the second tabletop section rotate between the folded and unfolded positions; a first truss support structure connected to the first rail section of the first side rail, the second rail section of the first side rail, and the center cross member, the first truss support structure configured to extend across an interface between the first tabletop section and the second tabletop section when the tabletop is in the unfolded position and is at least substantially disposed between the first rail section of the first side rail and the second rail section of the first side rail when the tabletop is in the folded position; a second truss support structure connected to the first rail section of the second side rail, the second rail section of the second side rail, and the center cross member, the second truss support structure configured to extend across the interface when the tabletop is in the unfolded position and is at least substantially disposed between the first rail section of the second side rail and the second rail section of the second side rail when the tabletop is in the folded position; a first support structure connected to the first tabletop section, the first support structure being movable between an extended position and a collapsed position relative to the first tabletop section; and a second support structure connected to the second tabletop section, the second support structure movable between an extended position and a collapsed position relative to the second tabletop section.
 17. The folding table as in claim 16, wherein: the first rail section of the first side rail includes an interface end positioned at the interface between the first tabletop section and the second tabletop section; the second rail section of the first side rail includes an interface end positioned at the interface; the first rail section of the second side rail includes an interface end positioned at the interface; the second rail section of the second side rail includes an interface end positioned at the interface; the first rail section of the first side rail defines at least a portion of an opening at the interface end; the second rail section of the first side rail defines at least a portion of an opening at the interface end; the first rail section of the second side rail defines at least a portion of an opening at the interface end; the second rail section of the second side rail defines at least a portion of an opening at the interface end; and the center cross member disposed in the openings.
 18. The folding table as in claim 17, wherein: the first and second truss support structures each include a center support member, a first support member, and a second support member; the center support members each include a first end coupled to the center cross member and a second end extending away from the center cross member; a first end of the first support member and a first end of the second support member pivotally connected to the center support member; a second end of the first support member and a second end of the second support member pivotally connected to the frame; when the tabletop is in the unfolded position, the center support members are disposed at least substantially normal to a lower surface of the tabletop such that the second ends of the center support members are displaced from the lower surface of the tabletop; and when the tabletop is in the folded position, the center support member of the first truss support structure is at least substantially disposed between the first rail section and the second rail section of the first side rail and the center support member of the second truss support structure is at least substantially disposed between the first rail section and the second rail section of the second side rail.
 19. The folding table as in claim 18, further comprising: a first connecting member attached to the first rail section of the first side rail; a second connecting member attached to the second rail section of the first side rail; a third connecting member attached to the first rail section of the second side rail; and a fourth connecting member attached to the second rail section of the second side rail, wherein: the first support members and the second support members are rods; a first adjusting mechanism is positioned at an end of the first support member of the first truss support structure; a second adjusting mechanism is positioned at an end of the second support member of the first truss support structure; a third adjusting mechanism is positioned at an end of the first support member of the second truss support structure; a fourth adjusting mechanism is positioned at an end of the second support member of the second truss support structure; the first support member of the first truss support structure is slidably disposed within the first connecting member; the second support member of the first truss support structure is slidably disposed within the second connecting member; the first support member of the second truss support structure is slidably disposed within the third connecting member; the second support member of the second truss support structure is slidably disposed within the fourth connecting member; when the tabletop is in the folded position, the ends of the first support members are separated from the first and the third connecting members such that portions of the first support members are positioned in the first and the third connecting members, and the ends of the second support members are separated from the second and the fourth connecting members such that portions of the second support members are positioned in the second and the fourth connecting members; and when the tabletop is in the unfolded position, the adjusting mechanisms contact the connecting members.
 20. The folding table as in claim 18, wherein: the first support members and the second support members each include a first link that includes a pin which is translationally coupled to a second link that defines a slot in which the pin of the first link is positioned; movement of the first links relative to the second links translates the pins in the slots and adjusts lengths of the first and second support members; when the tabletop is in the unfolded position, the pins are in contact with first ends of the slots; and when the tabletop is in the folded position, the pins are positioned between the first ends and second ends of the slots. 